Genuine Mini Spares heater valve. The original RANCO tooling has been scrappped so beware of some imports available where the inners quickly explode loosing the metal cap and all your water when operated.This has M4 metric thread bolt included for the cable screw instead of the 11/31"unc thread original
For the straight stem version of this valve see
13H5506.
For the correct best specification part available you will see MSC stamped on the side of the casting.